Search a number
-
+
47750480 = 2455691049
BaseRepresentation
bin1011011000100…
…1110101010000
310022211222100022
42312021311100
544211003410
64423243012
71116605141
oct266116520
9108758308
1047750480
1124a54708
1213ba9468
139b7b52b
1464adac8
1542d3455
hex2d89d50

47750480 has 40 divisors (see below), whose sum is σ = 111321000. Its totient is φ = 19048448.

The previous prime is 47750429. The next prime is 47750489. The reversal of 47750480 is 8405774.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6431296 + 41319184 = 2536^2 + 6428^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 47750480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47750489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44996 + ... + 46044.

It is an arithmetic number, because the mean of its divisors is an integer number (2783025).

Almost surely, 247750480 is an apocalyptic number.

47750480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47750480 is an abundant number, since it is smaller than the sum of its proper divisors (63570520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47750480 is a wasteful number, since it uses less digits than its factorization.

47750480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631 (or 1625 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 47750480 is about 6910.1722120364. The cubic root of 47750480 is about 362.7932909798.

The spelling of 47750480 in words is "forty-seven million, seven hundred fifty thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 569 1049 1138 2098 2276 2845 4196 4552 5245 5690 8392 9104 10490 11380 16784 20980 22760 41960 45520 83920 596881 1193762 2387524 2984405 4775048 5968810 9550096 11937620 23875240 47750480